Footnotes

1 - Norton proclaimed champion on Mar 29, 1978 on the basis of his Nov 5, 1977 title eliminator win over Jimmy Young2 - Lewis proclaimed champion on Dec 14, 1992 on the basis of his Oct 31, 1992 title eliminator win over Razor Ruddock3 - Rahman elevated to full champion on Nov 9, 2005 after Klitschko retires4 - Peter becomes interim champion due to Maskaev back injury and becomes full champion upon defeating Maskaev